#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	char tem = 0;
	scanf("%c", &tem);
	if (tem >= 'A' && tem <= 'z')
	{
		printf("%c is an alphabet.", tem);
	}
	else
	{
		printf("%c is not an alphabet.", tem);
	}
	return 0;
}